<template>
    <div class="login_container">
      <div class="login_box">
        <!--头像区域-->
        <div class="avatar_box">
          <img src="../assets/logo.png" alt="">
        </div>
        <!--登录表单区域-->
        <el-form ref="loginFormRef" :model="LoginForm" :rules="loginFormRules" label-width="60px" class="login_form">
          <!--用户名-->
          <el-form-item label="用户" prop="username">
            <el-input v-model="LoginForm.username" prefix-icon="iconfont icon-user"></el-input>
          </el-form-item>
          <!--密码-->
          <el-form-item label="密码" prop="password">
            <el-input v-model="LoginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
          </el-form-item>
          <!--按钮区域-->
          <el-form-item class="btns">
            <el-button type="primary" @click="login">登录</el-button>
            <el-button type="info" @click="resetLoginForm">重置</el-button>
          </el-form-item>
          </el-form>
      </div>
    </div>
</template>

<script>
export default {
  name: 'login',
  data () {
    return {
      // 这是登录表单的数据对象
      LoginForm: {
        username: 'admin',
        password: '123456'
      },
      // 这是表单的验证规则
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        // 验证密码是否合法
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
  //  点击重置按钮，重置登录表单
    resetLoginForm () {
      this.$refs.loginFormRef.resetFields()
      // console.log(this)
    },
    login () {
        this.$refs.loginFormRef.validate(async valid => {
          if (!valid) return false
          const { data: res } = await this.$http.post('login', this.LoginForm)
          console.log(res)
          if (res.meta.status !== 200) return this.$message.error('登录失败！')
          this.$message.success('登录成功！')
        //  保持登录token，其他api接口才能调用
          window.sessionStorage.setItem('token', res.data.token)
          this.$router.push('/home')
        })
    }
  }
}
</script>
<!--scoped，组件样式只在当前布局有效-->
<style lang="less" scoped>
  .login_container {
    background-color: #2b4b6b;
    height: 100%;
  }
  .login_box {
    height: 300px;
    width: 450px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);

    .avatar_box{
      height: 100px;
      width: 100px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%,-50%);
      background-color: lavender;
      img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #fff;
      }
    }

    .login_form{
      position: absolute;
      bottom: 0;
      width: 100%;
      padding: 0 20px;
      box-sizing: border-box;
    }
    .btns{
      display: flex;
      justify-content: flex-end;
    }
  }
</style>
